Machine for producing blanks.



Patented Aug. 27, I90I.

A. W. RDBINSQN. MACHINE FOR PRO'DUCING BLANKS.

I'Application led June 11, 1901.)

2 Sheets-Sheet l.

(No Model.)

am? v M INVENTDW gri-Nasse@- Tn: Norms mns cov. no wAsHwaYoN n c No.68|,5|0.. Patented Aug. 27, |90I.

' A. W. ROBINSON.

MACHINE Fon Pnooucma BLANKs.

(Application led June 11, `1.901.) (No Model.) 2 Sheets-Sheet 2l Tn:nonms Irina on, moraumo. wLsHwcrou. Dv c UNITED STATES PATENT OFFICE.

ALBERT WV. ROBINSON, OF SI'IARPTOVN, MARYLAND.

MACHINE FOR PRODUCING BLANKS.

SPECIFICATION forming part of Letters Patent No. 681,510, dated August27, 1901.

Application filed June l1, 1901. Serial No. 64,066. (No model.)

.To all whom t may concern:

Be it known that I, ALBERT W. ROBINSON, of Sharptown, in the county ofWicomico and State of Maryland, have invented certain Improvements inMachines for Producing Blanks to be Used in the Manufacture of VeneerTrays, of which the following is a specification.

This invention relates to certain attachments to a machine for producingblanks used in the manufacture of veneer trays, whereby the alternatestraight and zigzag scoring-line described on the veneer where the sameis to be bent is effected by channeling or grooving instead ofindenting; and the said invention consists in the combination, withchanneling or grooving knives, of means whereby the same arereciprocated laterally of the machine and longitudinally of the log fromwhich the veneer blanks are cut, as will hereinafter fully appear.

In the further description of the said invention which follows referenceis made to the accompanying drawings, forming a part hereof, and inwhich- Figure 1 is a front view of the improved machine. Fig. 2 is anend view of certain parts of Fig. 1 looking in the direction indicatedby the straight arrow. Fig. 3 is a side view of the blank-cuttingroller, together with certain of its attachments, and Fig. 4 an end Viewof the same. Fig. 5 is an enlarged top view of portions of thechanneling and blank-separating mechanism, and Fig. 6 a longitudinaledge view of the same. Fig. 7 is an end view of Fig. 6. Fig. Sis anenlarged fiat view of a number of blanks as they appear when leaving themachine. Figs. 9 and 10 are respectively a side and a top view of acomplete tray.

Referring now to the drawings, 1 is the frame of the machine, and 2 (seeFig. 2) the log from which the tray-blanks are cut. This log issupported by the driving and supporting centers, one only of which isshown in Fig. 2 and that in dotted lines and denoted by 3. The supporting-centers are rotated by means of the gear-Wheels 4 and 5 and thepinpinions 7 and 9, which are on the driving-shaft 10. The driving-pulley is represented by 11.

12 and 13 are respectively the rear and the front head, the formercarrying the blanklcutting roll 14 and the latter the veneerslicingknife 15 and the grooving mechanism hereinafter described. It isnecessary in the operating of the machine that the heads 12 and 13should have a regular movement t0- ward the centers of the machine,which support and rotate the log, and they are therefore connected bythe rotary threaded shafts 17. The portions of the said shafts whichpass through the head 12 have left-hand threads, and those which passthrough the head 13 are provided with right-hand threads. Consequentlywhen the said shafts are rotated in the operation of the machine theheads are drawn toward each other. The threaded shafts 17 are drivenfrom the driving-shaft 10 through the medium of the train of spurgear-Wheels 19, the last gear-Wheel 20 being on a shaft 21, extendinglongitudinally of the machine and situated in front of the log. Securedon the shaft 21 are the miter gear-Wheels 22, and these are in mesh withthe similar wheels 23, secured on the threads ed shafts 17.

Carried by the rear head 12 is a shaft 24,A carrying the blank-cuttingroll 14, before referred to. This roll is provided with thecutting-knives 25, (shown particularly in Figs. 3 and 4,) which projectsufficiently from the surface of the roll which is in contact with thesurface of the log to cut to a depth equal to the thickness of theveneer.

The knife 15, before referred to,which slices the veneer from the log,the surface of which has previously been acted upon by the knives of therolls 14, is secured to the front head 13, which has the hollow curvedsurface 27 to assist in carrying oif the blanks. (Shown in Fig. 8 andrepresented therein by 29.)

The machine thus far described is of common construction and embodies nopart of the present invention.

I will now describe the devices which produce instead of indentationschannels or grooves in the blanks to a depth of, say, about onehalf thethickness of the veneer, and which channels follow the dotted lines 28and 30 in Fig. 8.

Secured to or forming a part of the front head 13 is a stand 32, havingthe inclined surface 33. To this surface are fastened the threestationary and separated bars 34, 35,

TOO

and 36. Between the bars 34 and 35 are situated thelongitudinally-sliding bars 37 and 39, and between the ones 35 and 36are similar bars 40 and 41. The sliding bars 37 and 40 are connectedbythe bridges 43 and the ones 39 and 4l by the bridges 44, and all thesebridges serve as holders for the channelingknives 46 and 47,respectively. Other bridges 49 unite the stationary bars 34, 35, and 36,and they are therefore stationary or ixed, and these carry theblank-separating blades 50, which sever the blanks at 5l. (See Fig.8.)

In order that the channeling or grooving knives 46 and 47 in theoperation of the machine should describe the alternate straight andzigzag dotted lines 28 and 30, (shown in' Fig. 8,) it is necessary thatthey should have a reciprocating movement laterally of the machine or,in other Words, longitudinally of the log. To effect this operation ofthe channeling or grooving knives, the stand 32 is iitted with brackets54, which support the rotary shaft 55. The said shaft receives itsrotation from the shaft 24, before referred to, through the agency ofthe counter-shaft 56 and the miter gear-wheels 57, which have a commondiameter, so that one rotation of the friction-driven roll 14 effects asingle rotation of the shaft 56. Secured on the shaft 56 are the groovedcams 58 and 59, and one of the bridges 43 is provided with a pin 60,carrying a roller 61, Which enters the groove of the cam 58. One of theother bridges 44 is also provided with a pin 63, carrying a roller 64,which enters the groove of the cam 59. The shape of the grooves of thecams 58 and 59 is such that the channeling or grooving knives 46 and 47move in opposite directions, so as to make them follow the dotted lines28 and 30, respectively. (See Fig. 8.) As the miter gear-wheel 57 mustmove inward with the blank-cutting roll 14 and the rear head 12, it isdriven by a feather on its shaft instead of by a key.

In the operation of the machine the log is rotated in the directionindicated by the curved arrow in Fig. 2 and is rst operated upon by theblank-cutting roll 14, the knives of' which penetrate to a depthcorresponding to the thickness of the veneer, and then the out portionis scored by the channeling or grooving knives and the blanks separated,

after which the blanks are sliced from the log and fall from themachine. The blanks are then formed into trays in a subsequent operationby attaching together their ad j oining edges, as shown in Figs. 9 and10.

It Will be understood that channeled or grooved veneer has manyadvantages over that Which is merely scored Without removing a portionof its surface. When scored it is liable to split oif Where bent, as itmust be bent from the side that is scored. Channeled or grooved veneeris bent the opposite Way, thus rendering it less liable to split orbreak, and the veneer being much thinner Where channeled or groovedbends easily and makes a much stronger package. The corners formed atthe junction of the groove and flat portion of the veneer, exterior ofthe groove, will not come together to produce leverage to strain thet-hin portion of the veneer at the bottom of the groove. The trays aretherefore much stronger than those produced from veneer that has beensimply scored or indented.

I claim as my inventionl. In a machine for producing blanks to be usedin the manufacture of veneer trays, the combination of channeling orgrooving knives with means to effect their lateral motion so as toproduce zigzag bending channeled lines, substantially as specified.

2. In a machine for producing blanks to be used in the manufacture ofveneer trays, the combination of ixed separating-blades, channeling orgrooving knives arranged in pairs situated centrally of theseparating-blades, and means to el'ect a lateral movement of the knivesof each pair in opposite directions, whereby the veneer is cut intolengths and zigzag bending channeled lines edected substantially asspecified.

3. In a machine for producing blanks to be used in the manufacture ofveneer trays or packages, the combination of channeling or groovingknives, with means to effect their lateral motion so as to prod ucezigzag or curved bending channeled or grooved lines, substantially asspecified.

ALBERT W. ROBINSON.

Vitnesses:

WM. T. HOWARD, EsTEP T. GOTT.

